Senior SOC Engineer

Build the detections that stop threats in their tracks. We are looking for a Senior SOC Engineer (Detection) to join our growing Cyber Security team. This is a hands‑on engineering role where you’ll design and deliver high‑quality detections across Microsoft Sentinel and Splunk, helping protect critical systems and clients in real time.

This role is hybrid: two days a week in the Farnborough office, three days from home. You must be eligible for SC Clearance.

What you’ll be doing

• Develop, test and deploy detection content across Microsoft Sentinel and Splunk SIEM.
• Write and optimise detection logic using KQL and SPL.
• Turn monitoring requirements and use cases into effective, actionable detections.
• Tune alerts to reduce false positives and improve SOC efficiency.
• Validate detections against telemetry and ensure accuracy.
• Support onboarding of log sources across cloud, infrastructure, identity and network.
• Collaborate with SOC, Threat Intelligence and Security Architecture teams.
• Investigate detection issues and improve performance and reliability.
• Drive continuous improvement using automation, scripting and best practice.
• Ensure detections are clearly documented and operationally usable.

What you’ll bring

• Experience in SOC engineering, detection engineering or SIEM engineering.
• Strong hands‑on experience with Microsoft Sentinel and Splunk.
• Solid knowledge of KQL and SPL.
• Experience building, testing and maintaining detection rules.
• Good understanding of SIEM lifecycle management and security telemetry.
• Knowledge of cloud environments and IT infrastructure.
• Familiarity with frameworks such as MITRE ATT&CK.
• Ability to analyse threats and translate them into detection capability.

Nice to have

• Experience with SOAR (Logic Apps / Splunk SOAR).
• Detection‑as‑code or CI/CD pipeline experience.
• Scripting in PowerShell, Python or similar.
• Experience with Git‑based workflows.
• Relevant certifications (Microsoft, Splunk, Cyber Security).

Employment details

• Employment type: Permanent.
• Location: Hybrid – 2 days Farnborough office, 3 days from home.
• Security clearance level: Eligible for SC Clearance.
• Salary: Up to £80,000.
• Benefits: 25 days annual leave (option to buy additional days), 4× life insurance, matched contributory pension up to 6%, 3% flex benefit, single private medical cover, £5,400 car allowance.

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